//
//  ViewController.m
//  PBSliedMenu
//
//  Created by 裴波波 on 16/4/21.
//  Copyright © 2016年 裴波波. All rights reserved.
//

#import "ViewController.h"
#define kScreenH [UIScreen mainScreen].bounds.size.height
#define kScreenW [UIScreen mainScreen].bounds.size.width
#define kNavW 64
@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>

@property (nonatomic, strong) UITableView *tableView;
/** 记录是否打开侧边栏 */
@property (nonatomic, assign) BOOL openSlide;
/** 侧栏按钮 */
@property (nonatomic, strong) UIBarButtonItem *btnLeft;
@end

@implementation ViewController

#pragma mark - 选中某个cell代理方法
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    UITableViewCell * cell = [tableView cellForRowAtIndexPath:indexPath];
    NSLog(@"%@",cell.textLabel.text);
    //选中cell后立即取消选中
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
}



#pragma mark - tableView数据源
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    
    return 20;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    static NSString * ID = @"cell";
    UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:ID forIndexPath:indexPath];
    cell.textLabel.text = [NSString stringWithFormat:@"我是%zd",indexPath.row];
    cell.backgroundColor = [UIColor orangeColor];
    return cell;
}

- (void)viewDidLoad {
    
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    [self initLeftBarButton];
    //注册cell
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
}

#pragma mark - 初始化侧栏按钮
-(void)initLeftBarButton{
    
    UIButton * btnLeft = [[UIButton alloc] init];
    btnLeft.frame = CGRectMake(0, 0, 90, 40);
    [btnLeft setTitle:@"侧栏" forState:UIControlStateNormal];
    [btnLeft setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [btnLeft addTarget:self action:@selector(didLeftBtn) forControlEvents:UIControlEventTouchUpInside];
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:btnLeft];
    self.btnLeft = self.navigationItem.leftBarButtonItem;
}

#pragma mark - 懒加载tableView
-(UITableView *)tableView{
    
    if (_tableView == nil) {
        _tableView = [[UITableView alloc] init];
        _tableView.delegate = self;
        _tableView.dataSource = self;
        _tableView.backgroundColor = [UIColor orangeColor];
        //第一次点击tableView从左上角弹出,优化方案--先创建出tableView
        CGFloat hight = kScreenH;
        CGFloat x = 0;
        CGFloat y = kNavW;
        CGFloat width = 0;
        _tableView.frame = CGRectMake(x, y, width, hight);
        //取消显示竖直滚动条
        _tableView.showsVerticalScrollIndicator = NO;
    }
    return _tableView;
}

#pragma mark - 点击侧栏按钮弹出tableView
-(void)didLeftBtn{
    
    //禁用button等待动画执行完毕再启用button
    self.btnLeft.enabled = NO;
    CGFloat hight = kScreenH;
    CGFloat x = 0;
    CGFloat y = kNavW;
    if (!self.openSlide) {
        //添加动画
        [UIView animateWithDuration:0.3 animations:^{
            CGFloat width = kScreenW / 3;
            self.tableView.frame = CGRectMake(x, y, width, hight);
        }];
        [self.view addSubview:self.tableView];
    } else {
        [UIView animateWithDuration:0.3 animations:^{
            CGFloat width = 0;
            self.tableView.frame = CGRectMake(x, y, width, hight);
        }];
    }
    //执行完毕动画 启用button
    [self performSelector:@selector(setBtnLeftEnabled) withObject:nil afterDelay:0.3];
    //监视侧栏是否打开
    if (self.openSlide == YES) {
        self.openSlide = NO;
    } else {
        self.openSlide = YES;
    }
}

//不用反复创建tableView
//#pragma mark - 移除tableView
//-(void)removeSliedView{
//
//    [self.tableView removeFromSuperview];
//    self.btnLeft.enabled = YES;
//}
#pragma mark - 动画执行完毕启用"侧栏"按钮
-(void)setBtnLeftEnabled{
    
    self.btnLeft.enabled = YES;
    //动画执行完毕让第一个cell显示在最顶端
    self.tableView.contentOffset = CGPointMake(0, 0);
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end
